期刊
IEEE SENSORS JOURNAL
卷 18, 期 17, 页码 6978-6985出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2018.2853680
关键词
Diamagnetic levitation; flowrate; flowmeter; HOPG; magnet rotor
资金
- National Natural Science Foundation of China [51475436]
- Henan Province Key Project on Science and Technologies [152102210042]
- Henan Province University Science and Technology Innovation Team [18IRTSTHN016]
This paper presents a gas flowmeter by using the rotation of a diamagnetically levitated magnet rotor to measure the gas flowrate. Two highly oriented pyrolytic graphite (HOPG) sheets are introduced to build a diamagnetic levitation structure. By adjusting the distance between the two HOPG sheets, the diamagnetic levitation structure can he tuned to obtain a single potential well, which ensures the stable levitation and rotation of the magnet rotor and improves the stability of the sensor. The maximum distance for achieving a single potential well is measured to he 3.1 mm. The feasibility of the proposed flowmeter was verified by experiment. The performance of the sensor was tested, and the maximum relative error is 5.56%.
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